I applied for Spring 2010 in May. Fill the apllication form online, pay the fee, send your transcripts and take the TEAS. Just the standard steps. The problems for CSUSM is that they never let you know your status. Not even an email saying they 've received your application, or something like "your application is under review" Make sure you call them time to time, to make sure they have you in the file. I sent my TEAS score twice, and they asked me to send it again.
Finally I got an email saying I was accepted (6 months after), last night. But, I decided to go to Idaho last month, so someone may take my spot.
Good luck to your application